/**
 * Moondance UML modeling tool
 * 
 * This program is free software; you can redistribute it and
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package ro.pub.cs.se.moondance.command;

import org.eclipse.gef.commands.Command;

import ro.pub.cs.se.moondance.model.Connection;

public class ChangeConnectionNameCommand extends Command {

	private Connection conn;
	private String name, oldName;

	public ChangeConnectionNameCommand(Connection conn) {
		this.conn = conn;
	}

	/**
	 * @see org.eclipse.gef.commands.Command#execute()
	 */
	public void execute() {
		conn.setName(name);
	}

	/**
	 * @return whether we can apply changes
	 */
	public boolean canExecute() {

		if (name != null) {
			return true;
		} else {
			name = oldName;
			return false;
		}
	}

	public void setOldName(String string) {
		oldName = string;
	}

	public void setName(String string) {
		name = string;
	}

	/**
	 * @see org.eclipse.gef.commands.Command#undo()
	 */
	public void undo() {
		conn.setName(oldName);
	}

}